web 区域打印

来源：互联网发布：软件设计师任职资格编辑：程序博客网时间：2024/04/29 18:21

环境 jQury.1.4.js,jQuery.printArea.js,asp.net 2.0

jQuery.printArea.js 2.1版源码如下

---begin---
//jQuery.printArea.js 2.1版源码如下
(function ($) {

var counter = 0;
var modes = { iframe: "iframe", popup: "popup" };
var defaults = { mode: modes.iframe,
popHt: 500,
popWd: 400,
popX: 200,
popY: 200,
popTitle: '',
popClose: false
};

var settings = {}; //global settings

$.fn.printArea = function (options) {
$.extend(settings, defaults, options);

counter++;
var idPrefix = "printArea_";
$("[id^=" + idPrefix + "]").remove();
var ele = getFormData($(this));

settings.id = idPrefix + counter;

var writeDoc;
var printWindow;

switch (settings.mode) {
case modes.iframe:
var f = new Iframe();
writeDoc = f.doc;
printWindow = f.contentWindow || f;
break;
case modes.popup:
printWindow = new Popup();
writeDoc = printWindow.doc;
}

writeDoc.open();
writeDoc.write(docType() + "<html>" + getHead() + getBody(ele) + "</html>");
writeDoc.close();

printWindow.focus();
printWindow.print();

if (settings.mode == modes.popup && settings.popClose)
printWindow.close();
}

function docType() {
if (settings.mode == modes.iframe || !settings.strict) return "";

var standard = settings.strict == false ? " Trasitional" : "";
var dtd = settings.strict == false ? "loose" : "strict";

return '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01' + standard + '//EN" "http://www.w3.org/TR/html4/' + dtd + '.dtd">';
}

function getHead() {
var head = "<head><title>" + settings.popTitle + "</title>";
$(document).find("link")
.filter(function () {
return $(this).attr("rel").toLowerCase() == "stylesheet";
})
.filter(function () { // this filter contributed by "mindinquiring"
var media = $(this).attr("media");
if (media == undefined) {
return false;
}
else {
return (media.toLowerCase() == "" || media.toLowerCase() == "print");
}

})
.each(function () {
head += '<link type="text/css" rel="stylesheet" href="' + $(this).attr("href") + '" >';
});
head += "</head>";
return head;
}

function getBody(printElement) {
return '<body><div class="' + $(printElement).attr("class") + '">' + $(printElement).html() + '</div></body>';
}

function getFormData(ele) {
$("input,select,textarea", ele).each(function () {
// In cases where radio, checkboxes and select elements are selected and deselected, and the print
// button is pressed between select/deselect, the print screen shows incorrectly selected elements.
// To ensure that the correct inputs are selected, when eventually printed, we must inspect each dom element
var type = $(this).attr("type");
if (type == "radio" || type == "checkbox") {
if ($(this).is(":not(:checked)")) this.removeAttribute("checked");
else this.setAttribute("checked", true);
}
else if (type == "text")
this.setAttribute("value", $(this).val());
else if (type == "select-multiple" || type == "select-one")
$(this).find("option").each(function () {
if ($(this).is(":not(:selected)")) this.removeAttribute("selected");
else this.setAttribute("selected", true);
});
else if (type == "textarea") {
var v = $(this).attr("value");
if ($.browser.mozilla) {
if (this.firstChild) this.firstChild.textContent = v;
else this.textContent = v;
}
else this.innerHTML = v;
}
});
return ele;
}

function Iframe() {
var frameId = settings.id;
var iframeStyle = 'border:0;position:absolute;width:0px;height:0px;left:0px;top:0px;';
var iframe;

try {
iframe = document.createElement('iframe');
document.body.appendChild(iframe);
$(iframe).attr({ style: iframeStyle, id: frameId, src: "" });
iframe.doc = null;
iframe.doc = iframe.contentDocument ? iframe.contentDocument : (iframe.contentWindow ? iframe.contentWindow.document : iframe.document);
}
catch (e) { throw e + ". iframes may not be supported in this browser."; }

if (iframe.doc == null) throw "Cannot find document.";

return iframe;
}

function Popup() {
var windowAttr = "location=yes,statusbar=no,directories=no,menubar=no,titlebar=no,toolbar=no,dependent=no";
windowAttr += ",width=" + settings.popWd + ",height=" + settings.popHt;
windowAttr += ",resizable=yes,screenX=" + settings.popX + ",screenY=" + settings.popY + ",personalbar=no,scrollbars=no";

var newWin = window.open("", "_blank", windowAttr);

newWin.doc = newWin.document;

return newWin;
}

})(jQuery);

---end---
----------
页面调用部分

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" " http://www.w3.org/TR/html4/strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>子站综合信息</title>
<link href="/css/CRM.css" rel="stylesheet" type="text/css" />

<script src="/js/jquery-1.4.js" type="text/javascript"></script>

<script src="/js/jquery.PrintArea2.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
//$(document).ready(function(){
$("#print_btn").click(function() {

$("#print_area").printArea("popup");
});
});
//当单击打印按钮时，调用件printArea.js插件
</script>
</head>

#print_btn 为一个id= print_btn打印按钮
#print_area 为一个需要打印内容的div

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" " http://www.w3.org/TR/html4/strict.dtd">
这个很重要,可以解决win7等系统下打印区域不对的问题,与asp.net页面本身生成的
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
是有区别的哦 !!!

-----------------------------------------------
HTML <link>标签

定义和用法

media属性规定被链接文档将显示在什么设备上

media属性用于为不同的媒介类型规定不同的样式

浏览器支持

所有浏览器都支持值为"screen","print"以及"all"的media属性。

提示:在全屏模式中,opera也支持"projection"属性值

语法

<link media="value">

属性值

screen:计算机屏幕(默认)

tty:电传打字机以及类似的使用等宽字符网络的媒介

tv:电视机类型设备(低分辨率、有限的滚屏能力)

projection:放映机

handheld:手持设备(小屏幕、有限带宽)

print:打印机预览模式/打印页面

braille:盲人点字法反馈设备

aural:语音合成器

all:适用于所有设备